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// Quick reference navigator.geolocation.getCurrentPosition(cb); // Location localStorage / sessionStorage // Storage fetch(url, options).then(r => r.json()) // HTTP history.pushState(state, title, url) // URL new IntersectionObserver(cb).observe(el) // Viewport new Worker("worker.js") // Background thread new Notification("Title", { body }) // System notify navigator.clipboard.writeText(text) // Clipboard new FileReader().readAsDataURL(file) // File read new BroadcastChannel("name") // Tab comms
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